in hw/i2c/pmbus_device.c [1001:1539]
static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len)
{
PMBusDevice *pmdev = PMBUS_DEVICE(smd);
PMBusDeviceClass *pmdc = PMBUS_DEVICE_GET_CLASS(pmdev);
int ret = 0;
uint8_t index;
if (len == 0) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: writing empty data\n", __func__);
return -1;
}
if (!pmdev->pages) { /* allocate memory for pages on first use */
pmbus_pages_alloc(pmdev);
}
pmdev->in_buf_len = len;
pmdev->in_buf = buf;
pmdev->code = buf[0]; /* PMBus command code */
if (len == 1) { /* Single length writes are command codes only */
return 0;
}
if (pmdev->code == PMBUS_PAGE) {
pmdev->page = pmbus_receive8(pmdev);
return 0;
}
/* loop through all the pages when 0xFF is received */
if (pmdev->page == PB_ALL_PAGES) {
for (int i = 0; i < pmdev->num_pages; i++) {
pmdev->page = i;
pmbus_write_data(smd, buf, len);
}
pmdev->page = PB_ALL_PAGES;
return 0;
}
index = pmdev->page;
switch (pmdev->code) {
case PMBUS_OPERATION: /* R/W byte */
pmdev->pages[index].operation = pmbus_receive8(pmdev);
pmbus_operation(pmdev);
break;
case PMBUS_ON_OFF_CONFIG: /* R/W byte */
pmdev->pages[index].on_off_config = pmbus_receive8(pmdev);
break;
case PMBUS_CLEAR_FAULTS: /* Send Byte */
pmbus_clear_faults(pmdev);
break;
case PMBUS_PHASE: /* R/W byte */
pmdev->pages[index].phase = pmbus_receive8(pmdev);
break;
case PMBUS_PAGE_PLUS_WRITE: /* Block Write-only */
case PMBUS_WRITE_PROTECT: /* R/W byte */
pmdev->pages[index].write_protect = pmbus_receive8(pmdev);
break;
case PMBUS_VOUT_MODE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MODE) {
pmdev->pages[index].vout_mode = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_COMMAND: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_command = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_TRIM: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_trim = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_CAL_OFFSET: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_cal_offset = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_MAX: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_max = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_MARGIN_HIGH: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) {
pmdev->pages[index].vout_margin_high = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_MARGIN_LOW: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT_MARGIN) {
pmdev->pages[index].vout_margin_low = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_TRANSITION_RATE: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_transition_rate = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_DROOP: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_droop = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_SCALE_LOOP: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_scale_loop = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_SCALE_MONITOR: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_scale_monitor = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_POUT_MAX: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].pout_max = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VIN_ON: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VIN) {
pmdev->pages[index].vin_on = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VIN_OFF: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VIN) {
pmdev->pages[index].vin_off = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IOUT_CAL_GAIN: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_IOUT_GAIN) {
pmdev->pages[index].iout_cal_gain = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_OV_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_ov_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_OV_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_ov_fault_response = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_OV_WARN_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_ov_warn_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_UV_WARN_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_uv_warn_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_UV_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_uv_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VOUT_UV_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].vout_uv_fault_response = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IOUT_OC_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_IOUT) {
pmdev->pages[index].iout_oc_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IOUT_OC_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_IOUT) {
pmdev->pages[index].iout_oc_fault_response = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IOUT_OC_LV_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_IOUT) {
pmdev->pages[index].iout_oc_lv_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IOUT_OC_LV_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_IOUT) {
pmdev->pages[index].iout_oc_lv_fault_response
= pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IOUT_OC_WARN_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_IOUT) {
pmdev->pages[index].iout_oc_warn_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IOUT_UC_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_IOUT) {
pmdev->pages[index].iout_uc_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IOUT_UC_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_IOUT) {
pmdev->pages[index].iout_uc_fault_response = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_OT_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) {
pmdev->pages[index].ot_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_OT_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) {
pmdev->pages[index].ot_fault_response = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_OT_WARN_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) {
pmdev->pages[index].ot_warn_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_UT_WARN_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) {
pmdev->pages[index].ut_warn_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_UT_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) {
pmdev->pages[index].ut_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_UT_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) {
pmdev->pages[index].ut_fault_response = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VIN_OV_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VIN) {
pmdev->pages[index].vin_ov_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VIN_OV_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_VIN) {
pmdev->pages[index].vin_ov_fault_response = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VIN_OV_WARN_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VIN) {
pmdev->pages[index].vin_ov_warn_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VIN_UV_WARN_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VIN) {
pmdev->pages[index].vin_uv_warn_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VIN_UV_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VIN) {
pmdev->pages[index].vin_uv_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_VIN_UV_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_VIN) {
pmdev->pages[index].vin_uv_fault_response = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IIN_OC_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_IIN) {
pmdev->pages[index].iin_oc_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IIN_OC_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_IIN) {
pmdev->pages[index].iin_oc_fault_response = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_IIN_OC_WARN_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_IIN) {
pmdev->pages[index].iin_oc_warn_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_POUT_OP_FAULT_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].pout_op_fault_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_POUT_OP_FAULT_RESPONSE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].pout_op_fault_response = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_POUT_OP_WARN_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].pout_op_warn_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_PIN_OP_WARN_LIMIT: /* R/W word */
if (pmdev->pages[index].page_flags & PB_HAS_PIN) {
pmdev->pages[index].pin_op_warn_limit = pmbus_receive16(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_STATUS_BYTE: /* R/W byte */
pmdev->pages[index].status_word = pmbus_receive8(pmdev);
break;
case PMBUS_STATUS_WORD: /* R/W word */
pmdev->pages[index].status_word = pmbus_receive16(pmdev);
break;
case PMBUS_STATUS_VOUT: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
pmdev->pages[index].status_vout = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_STATUS_IOUT: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_IOUT) {
pmdev->pages[index].status_iout = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_STATUS_INPUT: /* R/W byte */
pmdev->pages[index].status_input = pmbus_receive8(pmdev);
break;
case PMBUS_STATUS_TEMPERATURE: /* R/W byte */
if (pmdev->pages[index].page_flags & PB_HAS_TEMPERATURE) {
pmdev->pages[index].status_temperature = pmbus_receive8(pmdev);
} else {
goto passthrough;
}
break;
case PMBUS_STATUS_CML: /* R/W byte */
pmdev->pages[index].status_cml = pmbus_receive8(pmdev);
break;
case PMBUS_STATUS_OTHER: /* R/W byte */
pmdev->pages[index].status_other = pmbus_receive8(pmdev);
break;
case PMBUS_PAGE_PLUS_READ: /* Block Read-only */
case PMBUS_CAPABILITY: /* Read-Only byte */
case PMBUS_COEFFICIENTS: /* Read-only block 5 bytes */
case PMBUS_READ_EIN: /* Read-Only block 5 bytes */
case PMBUS_READ_EOUT: /* Read-Only block 5 bytes */
case PMBUS_READ_VIN: /* Read-Only word */
case PMBUS_READ_IIN: /* Read-Only word */
case PMBUS_READ_VCAP: /* Read-Only word */
case PMBUS_READ_VOUT: /* Read-Only word */
case PMBUS_READ_IOUT: /* Read-Only word */
case PMBUS_READ_TEMPERATURE_1: /* Read-Only word */
case PMBUS_READ_TEMPERATURE_2: /* Read-Only word */
case PMBUS_READ_TEMPERATURE_3: /* Read-Only word */
case PMBUS_READ_FAN_SPEED_1: /* Read-Only word */
case PMBUS_READ_FAN_SPEED_2: /* Read-Only word */
case PMBUS_READ_FAN_SPEED_3: /* Read-Only word */
case PMBUS_READ_FAN_SPEED_4: /* Read-Only word */
case PMBUS_READ_DUTY_CYCLE: /* Read-Only word */
case PMBUS_READ_FREQUENCY: /* Read-Only word */
case PMBUS_READ_POUT: /* Read-Only word */
case PMBUS_READ_PIN: /* Read-Only word */
case PMBUS_REVISION: /* Read-Only byte */
case PMBUS_APP_PROFILE_SUPPORT: /* Read-Only block-read */
case PMBUS_MFR_VIN_MIN: /* Read-Only word */
case PMBUS_MFR_VIN_MAX: /* Read-Only word */
case PMBUS_MFR_IIN_MAX: /* Read-Only word */
case PMBUS_MFR_PIN_MAX: /* Read-Only word */
case PMBUS_MFR_VOUT_MIN: /* Read-Only word */
case PMBUS_MFR_VOUT_MAX: /* Read-Only word */
case PMBUS_MFR_IOUT_MAX: /* Read-Only word */
case PMBUS_MFR_POUT_MAX: /* Read-Only word */
case PMBUS_MFR_TAMBIENT_MAX: /* Read-Only word */
case PMBUS_MFR_TAMBIENT_MIN: /* Read-Only word */
case PMBUS_MFR_EFFICIENCY_LL: /* Read-Only block 14 bytes */
case PMBUS_MFR_EFFICIENCY_HL: /* Read-Only block 14 bytes */
case PMBUS_MFR_PIN_ACCURACY: /* Read-Only byte */
case PMBUS_IC_DEVICE_ID: /* Read-Only block-read */
case PMBUS_IC_DEVICE_REV: /* Read-Only block-read */
qemu_log_mask(LOG_GUEST_ERROR,
"%s: writing to read-only register 0x%02x\n",
__func__, pmdev->code);
break;
passthrough:
/* Unimplimented registers get passed to the device */
default:
if (pmdc->write_data) {
ret = pmdc->write_data(pmdev, buf, len);
}
break;
}
pmbus_check_limits(pmdev);
pmdev->in_buf_len = 0;
return ret;
}